Security

As contributors to open source and to the IT community in general, we value the work of independent security researchers.

If you’re good enough to spot a vulnerability in our site, we’d love to know about it. We’ll reward anyone who reports a critical vulnerability for the first time.

Just follow the guideline below to ensure that you qualify for a reward and that you don’t violate our Terms and Conditions.

If an unauthorised transaction was made on your payment card, please contact the issuing bank and the police to notify them about the suspicious activity.

Financial institutions can send an email about fraud-related issues to [email protected]. Other booking-related questions will not be answered. If you have a non-fraud issue, please visit our Help Centre.